1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 // This is the default linker namespace for a vendor process (a process started
18 // from /vendor/bin/*).
19
20 #include "linkerconfig/namespacebuilder.h"
21
22 #include <android-base/strings.h>
23
24 #include "linkerconfig/common.h"
25 #include "linkerconfig/environment.h"
26
27 using android::linkerconfig::modules::AllowAllSharedLibs;
28 using android::linkerconfig::modules::LibProvider;
29 using android::linkerconfig::modules::LibProviders;
30 using android::linkerconfig::modules::Namespace;
31
32 namespace android {
33 namespace linkerconfig {
34 namespace contents {
BuildVendorDefaultNamespace(const Context & ctx)35 Namespace BuildVendorDefaultNamespace(const Context& ctx) {
36 return BuildVendorNamespace(ctx, "default");
37 }
38
BuildVendorNamespace(const Context & ctx,const std::string & name)39 Namespace BuildVendorNamespace([[maybe_unused]] const Context& ctx,
40 const std::string& name) {
41 Namespace ns(name, /*is_isolated=*/true, /*is_visible=*/true);
42
43 ns.AddSearchPath("/odm/${LIB}");
44 ns.AddSearchPath("/vendor/${LIB}");
45 ns.AddSearchPath("/vendor/${LIB}/hw");
46 ns.AddSearchPath("/vendor/${LIB}/egl");
47
48 ns.AddPermittedPath("/odm");
49 ns.AddPermittedPath("/vendor");
50 ns.AddPermittedPath("/system/vendor");
51
52 ns.GetLink("rs").AddSharedLib("libRS_internal.so");
53 ns.AddRequires(base::Split(Var("LLNDK_LIBRARIES_VENDOR", ""), ":"));
54
55 if (android::linkerconfig::modules::IsVendorVndkVersionDefined()) {
56 ns.GetLink(ctx.GetSystemNamespaceName())
57 .AddSharedLib(Var("SANITIZER_DEFAULT_VENDOR"));
58 ns.GetLink("vndk").AddSharedLib({Var("VNDK_SAMEPROCESS_LIBRARIES_VENDOR"),
59 Var("VNDK_CORE_LIBRARIES_VENDOR")});
60 if (android::linkerconfig::modules::IsVndkInSystemNamespace()) {
61 ns.GetLink("vndk_in_system")
62 .AddSharedLib(Var("VNDK_USING_CORE_VARIANT_LIBRARIES"));
63 }
64 }
65
66 ns.AddRequires(ctx.GetVendorRequireLibs());
67 ns.AddProvides(ctx.GetVendorProvideLibs());
68 return ns;
69 }
70
BuildVendorSubdirNamespace(const Context &,const std::string & name,const std::string & subdir)71 static Namespace BuildVendorSubdirNamespace(const Context&,
72 const std::string& name,
73 const std::string& subdir) {
74 Namespace ns(name, /*is_isolated=*/true, /*is_visible=*/true);
75 ns.AddSearchPath("/vendor/${LIB}/" + subdir);
76 ns.AddPermittedPath("/vendor/${LIB}/" + subdir);
77 ns.AddPermittedPath("/system/vendor/${LIB}/" + subdir);
78
79 // Common requirements for vendor libraries:
80 ns.AddRequires(base::Split(Var("LLNDK_LIBRARIES_VENDOR", ""), ":"));
81 ns.AddRequires(std::vector{":vendorall"});
82 if (android::linkerconfig::modules::IsVendorVndkVersionDefined()) {
83 ns.AddRequires(std::vector{":vndk"});
84 }
85
86 return ns;
87 }
88
AddVendorSubdirNamespaceProviders(const Context & ctx,LibProviders & providers)89 void AddVendorSubdirNamespaceProviders(const Context& ctx,
90 LibProviders& providers) {
91 // Export known vendor subdirs as linker namespaces
92
93 // /vendor/lib/mediacas is for CAS HAL to open CAS plugins
94 providers[":mediacas"] = {LibProvider{
95 "mediacas",
96 std::bind(BuildVendorSubdirNamespace, ctx, "mediacas", "mediacas"),
97 AllowAllSharedLibs{},
98 }};
99
100 // Vendor subdir namespace should be able to access all /vendor/libs.
101 std::string vendor_namespace_name = "default";
102 if (ctx.IsApexBinaryConfig()) {
103 vendor_namespace_name = "vendor";
104 }
105 providers[":vendorall"] = {LibProvider{
106 "vendor",
107 std::bind(BuildVendorNamespace, ctx, vendor_namespace_name),
108 AllowAllSharedLibs{},
109 }};
110 }
111
112 } // namespace contents
113 } // namespace linkerconfig
114 } // namespace android
115